in this study which has been carried out from 1996 until 1997 soluble latex agglutination antigen was prepared from L, donovani,sudan(s-1) by culturing in special media,harvesting,and later solubilizing by freezing and thawing.the antigen were futher prepared by high speed centrifugation.after measurement of the protein (lowry method) concentration of the antigen was set at 2.2 mg/ml,the antige...

A solid phase, enzyme-linkcd immunoassay is described for the quantitative determination of the complex of human granulocyte elastase (EC 3.4.21.37) with αι-proteinase inhibitor. The assay employs antibody-coated test tubes and it is suitable for routine use in clinical chemistry laboratories. Data for sample stability and test characteristics are given. A reference r nge of 20—180 μg/l elastas...

A simple, sensitive and rapid high-performance liquid chromatography/electrospray ionization tandem mass spectrometry method was developed and validated for the assay of amlodipine in human plasma. Following liquid-liquid extraction, the analytes were separated using an isocratic mobile phase on a reverse-phase C(18) column and analyzed by MS in the multiple reaction monitoring mode using the r...

A rapid and simple organic extraction method for the determination of the chemical warfare agent, isopropyl methylphosphonofluoridate (sarin, GB) in human plasma has been developed using gas chromatography-tandem mass spectrometry (GC-MS/MS). In the course of method development, several organic solvents have been screened and chloroform show a low background and increase signal to noise ratio o...

We report on a new, sensitive, and fast LC-MS/MS method for the simultaneous determination of 25 key sphingolipid components in human plasma, including phosphorylated sphinganine and sphingosine, in a single 9-min run. This method enables an effective and high-throughput coverage of the metabolic changes involving the sphingolipidome during physiological or pathological states. The method is ba...

A method for sensitive determination of the anti-cancer agent oxaliplatin in human plasma and human plasma ultrafiltrate (pUF) is presented. The method is based on the quantification of platinum by graphite-furnace atomic-absorption spectrometry, with Zeeman correction and an atomisation temperature of 2,700 degrees C. Sample pretreatment involves dilution of the samples with a solution contain...

A rapid and highly sensitive liquid chromatography/tandem mass spectrometric (LC/MS/MS) method for determination allopurinol (AP) in human plasma was developed. The analyte and internal standard (IS), Ganciclovir-d5, were extracted from human plasma via liquid/liquid extraction (LLE) with ethyl acetate (2.5mL), supernatant was dried and reconstituted in 200 μL of 10mM ammonium acetate-methanol ...

patients and methods in the present cross-sectional study, 109 patients with established hiv infection, who visited a governmental and referral center for hiv screening in tehran (tehran west health center (twhc)) between may 2014 and july 2015 were enrolled according to the convenience sample strategy. after peripheral blood collection, isolation of plasma and peripheral blood mononuclear cell...

A sensitive, selective and first automated method is described for the quantification of Ibuprofen in human plasma using Diclofenac as internal standard. The Bioanalytical approach consists of Liquid -Liquid extraction with 70:30 extraction mixture, chromatographic separation of 10μL injected sample with nonpolar(C18) column using 45:45:10 isocratic solvent mixture as mobile phase followed by q...